This report analyzes demographic shifts between our 2020 and 2025 surveys, focusing on age-gender distributions by examining whether weighting the 2025 data to match the 2020 demographic composition would improve comparability between survey waves.
Key Findings:
| Dataset | Sample Size | Women (%) | Men (%) | Nonbinary (%) |
|---|---|---|---|---|
| 2020 Survey | 2606 | 82.4 | 17.5 | 0.1 |
| 2025 Survey | 2437 | 85.3 | 14.3 | 0.4 |
| Age Group | Men | Nonbinary | Women |
|---|---|---|---|
| Under 25 | 7 | 0 | 38 |
| 25-29 | 23 | 0 | 164 |
| 30-34 | 38 | 0 | 271 |
| 35-39 | 52 | 1 | 325 |
| 40-44 | 51 | 0 | 292 |
| 45-49 | 58 | 1 | 263 |
| 50-54 | 56 | 1 | 266 |
| 55-59 | 56 | 0 | 268 |
| 60-64 | 65 | 0 | 172 |
| 65 or older | 47 | 0 | 72 |
| Age Group | Men | Nonbinary | Women |
|---|---|---|---|
| Under 25 | 4 | 2 | 38 |
| 25-29 | 18 | 0 | 149 |
| 30-34 | 23 | 1 | 201 |
| 35-39 | 54 | 1 | 297 |
| 40-44 | 45 | 0 | 343 |
| 45-49 | 49 | 2 | 304 |
| 50-54 | 42 | 1 | 263 |
| 55-59 | 46 | 0 | 219 |
| 60-64 | 20 | 2 | 159 |
| 65 or older | 37 | 1 | 91 |
We calculated weights to adjust the 2025 data to match the 2020 demographic distribution:
Weight Formula: Weight = (2020 Proportion) ÷ (2025 Proportion)
This approach allows us to examine what the 2025 results would look like if the sample had the same age-gender composition as 2020.
Data Quality Note: Some age-gender combinations exist in 2025 but have zero representation in 2020. These cases receive zero weights and are excluded from the weighted analysis.
| Age Group | Gender | 2025 Count | 2020 Count |
|---|---|---|---|
| 25-29 | Nonbinary | 0 | 0 |
| 30-34 | Nonbinary | 1 | 0 |
| 40-44 | Nonbinary | 0 | 0 |
| 55-59 | Nonbinary | 0 | 0 |
| 60-64 | Nonbinary | 2 | 0 |
| 65 or older | Nonbinary | 1 | 0 |
| Under 25 | Nonbinary | 2 | 0 |
Age-Gender Distribution Across All Datasets
Overall Gender Distribution Comparison
Demographic Changes Between 2020 and 2025
Magnitude of Demographic Changes by Group
Effect of Weighting on 2025 Distribution
| Metric | Value |
|---|---|
| 2020 Sample Size | 2,606 |
| 2025 Sample Size | 2,437 |
| 2025 Effective Sample Size (Weighted) | 2,412 |
| Total Demographic Change | 15.3 percentage points |
| Largest Single Group Change | 2.9 percentage points |
| Cases Excluded from Weighting | 31 |
Based on our demographic shift analysis, here are our findings and recommendations:
Key Metrics:
Recommendation: Use Weighted Data
Reason: Large demographic shifts detected (>10 percentage points total change)
The substantial differences in age-gender composition between 2020 and 2025 suggest that weighting will significantly improve comparability between survey waves.